(function (Prism) {
    Prism.languages.kotlin = Prism.languages.extend('clike', {
        'keyword': {
            // The lookbehind prevents wrong highlighting of e.g. kotlin.properties.get
            pattern: /(^|[^.])\b(?:abstract|actual|annotation|as|break|by|catch|class|companion|const|constructor|continue|crossinline|data|do|dynamic|else|enum|expect|external|final|finally|for|fun|get|if|import|in|infix|init|inline|inner|interface|internal|is|lateinit|noinline|null|object|open|operator|out|override|package|private|protected|public|reified|return|sealed|set|super|suspend|tailrec|this|throw|to|try|typealias|val|var|vararg|when|where|while)\b/,
            lookbehind: true,
        },
        'function': [
            {
                pattern: /(?:`[^\r\n`]+`|\b\w+)(?=\s*\()/,
                greedy: true,
            },
            {
                pattern: /(\.)(?:`[^\r\n`]+`|\w+)(?=\s*\{)/,
                lookbehind: true,
                greedy: true,
            },
        ],
        'number': /\b(?:0[xX][\da-fA-F]+(?:_[\da-fA-F]+)*|0[bB][01]+(?:_[01]+)*|\d+(?:_\d+)*(?:\.\d+(?:_\d+)*)?(?:[eE][+-]?\d+(?:_\d+)*)?[fFL]?)\b/,
        'operator': /\+[+=]?|-[-=>]?|==?=?|!(?:!|==?)?|[\/*%<>]=?|[?:]:?|\.\.|&&|\|\||\b(?:and|inv|or|shl|shr|ushr|xor)\b/,
    });

    delete Prism.languages.kotlin['class-name'];

    var interpolationInside = {
        'interpolation-punctuation': {
            pattern: /^\$\{?|\}$/,
            alias: 'punctuation',
        },
        'expression': {
            pattern: /[\s\S]+/,
            inside: Prism.languages.kotlin,
        },
    };

    Prism.languages.insertBefore('kotlin', 'string', {
        // https://kotlinlang.org/spec/expressions.html#string-interpolation-expressions
        'string-literal': [
            {
                pattern: /"""(?:[^$]|\$(?:(?!\{)|\{[^{}]*\}))*?"""/,
                alias: 'multiline',
                inside: {
                    'interpolation': {
                        pattern: /\$(?:[a-z_]\w*|\{[^{}]*\})/i,
                        inside: interpolationInside,
                    },
                    'string': /[\s\S]+/,
                },
            },
            {
                pattern: /"(?:[^"\\\r\n$]|\\.|\$(?:(?!\{)|\{[^{}]*\}))*"/,
                alias: 'singleline',
                inside: {
                    'interpolation': {
                        pattern: /((?:^|[^\\])(?:\\{2})*)\$(?:[a-z_]\w*|\{[^{}]*\})/i,
                        lookbehind: true,
                        inside: interpolationInside,
                    },
                    'string': /[\s\S]+/,
                },
            },
        ],
        'char': {
            // https://kotlinlang.org/spec/expressions.html#character-literals
            pattern: /'(?:[^'\\\r\n]|\\(?:.|u[a-fA-F0-9]{0,4}))'/,
            greedy: true,
        },
    });

    delete Prism.languages.kotlin['string'];

    Prism.languages.insertBefore('kotlin', 'keyword', {
        'annotation': {
            pattern: /\B@(?:\w+:)?(?:[A-Z]\w*|\[[^\]]+\])/,
            alias: 'builtin',
        },
    });

    Prism.languages.insertBefore('kotlin', 'function', {
        'label': {
            pattern: /\b\w+@|@\w+\b/,
            alias: 'symbol',
        },
    });

    Prism.languages.kt = Prism.languages.kotlin;
    Prism.languages.kts = Prism.languages.kotlin;
}(Prism));
